package com.lory.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @Description TODO
 * @Author lory
 * @Date 2020/3/17 0017
 * @Version V3.1
 **/
@Service
public class PaymentService {

    public String paymentInfo_OK(Integer id){
        return "线程池： " + Thread.currentThread().getName() + " paymentInfo_ok,id：" + id + "\t" + "哈华盛顿--";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfo_TimeOut(Integer id){
        int time = 8;
        try {
            TimeUnit.SECONDS.sleep(time);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池： " + Thread.currentThread().getName() + " paymentInfo_TimeOut,id：" + id + "\t" + "耗时(秒)--" + time;
    }

    //兜底方案
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池： "+ Thread.currentThread().getName() + " 8001系统繁忙或者运行报错，请稍后再试,id: " + id + "\t" + "兜底";
    }

    //=====服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"), //是否打开断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"), //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"), //时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60") //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id < 0){
            throw new RuntimeException("******** id 不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName() + "\t" +"调用成功，流水号：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能负数,请稍后再试";
    }
}
